diff -urN oldtree/drivers/char/tty_io.c newtree/drivers/char/tty_io.c
--- oldtree/drivers/char/tty_io.c	2006-08-20 04:56:14.664036500 -0400
+++ newtree/drivers/char/tty_io.c	2006-08-20 04:58:04.786918750 -0400
@@ -2750,9 +2750,9 @@
 {
 	int err;
 	
-	down(&tty->termios_sem);
+	mutex_lock(&tty->termios_mutex);
 	err = copy_to_user(arg, &tty->winsize, sizeof(*arg));
-	up(&tty->termios_sem);
+	mutex_unlock(&tty->termios_mutex);
 	
 	return err ? -EFAULT: 0;
 }
@@ -2782,14 +2782,15 @@
 	if (copy_from_user(&tmp_ws, arg, sizeof(*arg)))
 		return -EFAULT;
 
-	down(&tty->termios_sem);
+	mutex_lock(&tty->termios_mutex);
 	if (!memcmp(&tmp_ws, &tty->winsize, sizeof(*arg)))
 		goto done;
 
 #ifdef CONFIG_VT
 	if (tty->driver->type == TTY_DRIVER_TYPE_CONSOLE) {
-		if (vc_lock_resize(tty->driver_data, tmp_ws.ws_col, tmp_ws.ws_row)) {
-			up(&tty->termios_sem);
+		if (vc_lock_resize(tty->driver_data, tmp_ws.ws_col,
+					tmp_ws.ws_row)) {
+			mutex_unlock(&tty->termios_mutex);
  			return -ENXIO;
 		}
 	}
@@ -2801,7 +2802,7 @@
 	tty->winsize = tmp_ws;
 	real_tty->winsize = tmp_ws;
 done:
-	up(&tty->termios_sem);
+	mutex_unlock(&tty->termios_mutex);
 	return 0;
 }